I have a hp printer that i cannot install on my computer(windows vista) i've had the printer for 2 yrs. worked great until a month ago, i couldn't find the printer on my computer it disappeared! i get this message when i try to install it: "Windows encountered a problem installing the driver software for your device.Windows found driver software for your device but encountered an error while attemting to install it.Hp deskjet F4100 series.One of the installers for this device cannot perform the installation at this time." i don't know if it's my computer or the printer but the print spooler keeps stopping. if any one knows how to fix it PLEASE HELP ME!!!!